Columbia Men's Tall Silver Ridge Long Sleeve Shirt 100% Other Fibers Imported Omni-Wick technology Omni-Shade UPF 50 sun protection Sun protection collar. Vented Roll-up sleeve. Roll-up sleeves with tab holders Sun protection cuff Omni-Wick Advanced Evaporation Omni-Shade UPF 50 sun protection Roll-up sleeves Sun protection collar